insert.d - BaussProjects - daweb

// http://baussprojects.comlu.com/projects.php#daweb
import std.array : replace, join;
import std.conv : to;
import std.string : isNumeric;

/**
*   Class test.
*   HelloCreator creates a specific amount of lines with Hello and a number.
*/
class HelloCreator {
    int amount;
    this(int amount) {
        this.amount = amount;
    }

    string create() {
        string hello;
        foreach (i; 0 .. amount)
            hello ~= "Hello " ~ to!string(i) ~ "!<br />\r\n";
        return hello;
    }
}

if (post) {
    // If POST do this
    // Attempts to get "number" from the post data. Gives an empty string if not found.
    string number = postData.get("number", "");
    if (!isNumeric(number)) {
        // If the input is not a number print an error message
        html = replace(html, "@VALUE", "Please type a number! '" ~ number ~ "' is not valid!");
    }
    else {
        // If the input is a number do this
        // Creates a new instance of HelloCreator with the amount of Hello's to be the input number
        auto hello = new HelloCreator(to!int(number));
        // Replaces "@VALUE" within the html with the return value of create()
        html = replace(html, "@VALUE", hello.create());
    }
}
else {
    // if GET do this
    // Creates a new instance of HelloCreator with the amount of Hello's to be 10
    auto hello = new HelloCreator(10);
        // Replaces "@VALUE" within the html with the return value of create()
    html = replace(html, "@VALUE", hello.create());
}

if (queryString) {
    // If there is a query string do this
    // Joins all the query string keys into a string with ", " as a separator
    html = replace(html, "@QUERIES", join(queryString.keys, ", "));
}
else {
    // If there is no query string just type N/A
    html = replace(html, "@QUERIES", "N/A");
}
<html>

<head>
    <title>Index</title>
</head>
<body>
    @QUERIES
    <p>
        <span style="color: #ffffff; background-color: #000000;">
            @VALUE
        </span>
    </p>

    <form action="index.d" method="POST">
        Type a number:<br />
        <input type="text" name="number" /><br />
        <input type="submit" value="Submit" />
    </form>
</body>

</html>